baber/WOPTO huggingface dataset:
Patent GB-814082-A (GB)
Title: Improvements in or relating to electrical systems for scanning a plurality of devices
IPC: H04M15/08
Filed: 1956-12-21
Abstract: 814,082. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. Dec. 21, 1956 [Dec. 28, 1955], No. 39019/56. Class 40 (4). Subscribers' lines are continuously scanned and a change in condition of a line causes the rate of scanning to be changed. As described, the discovery of a calling condition on a line causes the scanning to be restricted to a group of lines including the calling line, so that the frequency of scanning of each line within that group is increased. The embodiment described comprises a satellite switching centre serving sixty sub-stations 2S00-59 and connected to an exchange by a plurality of trunks and by three pairs of control wires. A pulse source at the exchange drives synchronous counting circuits at the exchange and at the satellite. Line-scanning units 2LS00-59, each associated with one subscriber's line, are arranged at the satellite in a rectangular co-ordinate array consisting of twelve groups and five files. Positive pulses from the counting circuits are applied to the resistors 2VG of each group in turn and to the capacitors 2VF of each file in turn. Simultaneous arrival of the two pulses at a particular line-scanning unit causes its first varistor 2D to pass a pulse to its second varistor 2S. If the associated line is open, with the receiver on its hook, the varistor 2S is reversebiased by battery 2B2 so that the pulse is not transmitted. If, however, the sub-station is in a calling condition, with the line closed, a circuit is completed between batteries 2B1 and 2B2 so that the junction of varistor 2S and capacitor 2C becomes sufficiently positive to allow varistor 2S to pass the pulse which is sent as a servicerequest pulse to the exchange. This stops the operation of the group counter at the satellite so that the group containing the calling line is scanned repeatedly. If the calling condition is maintained, the exchange equipment initiates the connection of the calling line to one of the trunks connecting the satellite to the exchange. The completion of the connection, effected by means of a relay and gas-filled diode associated with the calling line, reverse-biases the calling line's varistor 2S to stop the sending of service- . request pulses and completes a circuit for subsequent scanning pulses to pass to the exchange as line-busy pulses. The counting circuits are then reset and normal scanning is resumed. The counting circuits include transistor circuits of the type described in Specification 753,014, [Group XL (c)], and the pulse amplifiers also employ transistors.
Patent GB-1145469-A (GB)
Title: Cooler for a travelling wave tube
Inventor: FORBES REGINALD WILLIAM JAMES
IPC: H01J19/36
Filed: 1967-08-24
Abstract: 1,145,469. Cooling travelling-wave tubes. STANDARD TELEPHONES & CABLES Ltd. 24 Aug., 1967, No. 39053/67. Heading H1D. [Also in Division E2] A cooler for a conoidal collector electrode of a travelling-wave tube includes a plurality of cooling fins 13, each of which surrounds the collector and is supported by rods 4 passing, with clearance, through holes in the fins, each fin having a central flange 16 shaped to fit around a respective axial region of the collector, and a set of springs 12 urging the fins axially towards the end of the cooler through which the collector is inserted. As shown, the rods are held in a centring member 2, adjustable by screws within the tube mounting 3, which includes a permanent magnet focusing system. The collector end of the tube is inserted through, and held by, an 0-ring 6, the collector forcing the fins back against the action of the spring 12, the opposite ends of which abut against flanges 11 formed at the further end of each of the sleeves 10, such that the tapered flanges 16 make good thermal contact with appropriate regions of the collector (Fig. 4, not shown). The arrangement permits tilting of the tube with respect to the cooler for adjustment of the focusing of the electron beam.
Patent GB-1389126-A (GB)
Title: Bandpass filter
IPC: H01P1/218
Filed: 1972-08-23
Abstract: 1389126 Band-pass filters PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 Aug 1972 [26 Aug 1971] 39230/72 Heading H1W A bandpass filter comprises input and output lines coupled by ferrimagnetic resonance in YIG elements and also by electro-magnetic coupling whereby a frequency characteristic having attenuation poles may be obtained. As shown, inner-conductors 2 of input and output co-axial lines are connected to conductor 8 of a strip line. The conductors 2 are spaced from and run at right-angles to a coupling conductor 2a. Magnetically polarized YIG spheres 3 are inserted in the spacing. In addition to the magnetic coupling, conductors 2 are also electromagnetically coupled through a gap of dimensions a, b. It can be shown that the signals transmitted by the two types of coupling are in antiphase at frequencies on either side of the pass band, whereby poles of attenuation are created at these points.. The same effect arises in a filter having more than two sections if the electromagnetic coupling is arranged between sections separated by an even number of intermediate sections. The filter is enclosed in a magnetic yoke 10, 11 which attached to the substrate of the strip line 8 by two bolts 18 (one shown). The filter may be magnetically tuned either by a movable magnetic shunt or by a winding on the yoke (Fig. 8, not shown). In the case of coupled adjacent sections, the coupling gap may be adjusted by a movable shutter (Fig. 7, not shown).
Patent GB-339513-A (GB)
Title: Electric tubular lamp and method of making same
IPC: H01K3/08
Filed: 1929-12-23
Abstract: 339,513. Pleehati-Gl³hlampenfabrik. Oct. 25, 1929, [Convention date]. Bulbs; making lamps; filaments, supports for; residual gases.-The filament of a tubular lamp is secured to the wall of the tube by a number of supports fused to the inner wall of the tube. The supports may consist of wires 6 having at their ends glass beads 5 and' secured to the filament 2 by a cement containing materials which tend to reduce blackening and improve the vacuum in the tube. An amyl acetate cement containing calcium fluoride and amorphous phosphorus is described. The filament may be drawn through the tube from a drum and placed in position by means of a device consisting of a portion of a cylinder 10 of sheet metal having a web 11 with a turned over portion 12 for supporting the filament formed with slots to receive the supports 6. The beads 5 are then fused to the wall of the tube and the cylinder 11 removed. The tube may be partly silvered and coloured or enclosed in a coloured casing and it is stated that an effect similar to that of a neon light can thus be obtained. Specification 19259/05 is referred to.. The Specification as open to inspection under Sect. 91 (3) (a) states that the supporfs may be secured to the filament by bending them and that the tubes may be made in the form of letters &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-1152127-A (GB)
Title: Hydrocarbon Hydraulic Oil
Inventor: FAINMAN MORTON Z
IPC: C07C15/02
Filed: 1967-08-29
Abstract: 1,152,127. Hydrocarbon hydraulic oil; lubricants. U. B. BRAY, and E. L. BRAY, [trading as BRAY OIL CO.]. 29 Aug., 1967, No. 39417/67. Headings C5E and C5F. A hydrocarbon oil of the formula R<SP>1</SP>-Ph-R<SP>2</SP> wherein Ph is a phenylene group, R<SP>1</SP> is a C 6 -C 15  alkyl group and R<SP>2</SP> is a C 14 -C 22  alkyl group, the total number of carbon atoms in said R groups being 20-30 and said alkyl groups consisting of linear chains of carbon atoms substituted by H and CH 3  radicals has the following characteristics: viscosity of 80-200 SUS at 100‹ F.; average b.p. 450-600‹ F. at 10 mm. pressure; API gravity at 60‹ F. of 28-33; pour point not above -40‹ F. and viscosity index of 95-125. The hydrocarbon oil may be prepared by (1) fractionating a petroleum distillate, to obtain a fraction of 6-22 carbon atoms of b.p. 150-600‹ F., (2) separating said fraction into linear and non- linear hydrocarbons by selective absorption of linear components in a molecular sieve followed by desorption of linear components; (3) fractionating said linear hydrocarbon mixture and chlorinating the narrow fractions with not more than half the molar equivalent of chlorine to give alpha monochloro - paraffins; (4) aromatizing the purified mono-chloro-paraffins with excess benzene in the presence of a Friedel- Crafts catalyst and recovering dialkyl benzenes free from mono-alkyl benzenes and polyalky benzenes. Specific examples of dialkyl benzene which may be used as hydraulic oils are CH 3 (CH 2 ) 5 .C 6 H 4 .(CH 2 ) 13 .CH 3  CH 3 .C(CH 3 ) 2 .(CH 2 ) 2 .C 6 H 4 .(CH 2 ) 21 .CH 3  and CH 3 .(CH 2 ) 13 .C 6 H 4 .(CH 2 ) 13 .CH 3  wherein the alkyl groups are in the ortho- or para-positions. Optional additives to the hydraulic oil include ditertrary butyl paracresol, aromatic amines, amino phenols, phenothiazine, zinc dithiophosphate, tricresyl phosphate, and polymethacrylate or polybutene viscosity index improvers.
Patent GB-861674-A (GB)
Title: Improved amusement device
IPC: A63B43/00
Filed: 1959-11-20
Abstract: 861,674. Balls for games; pneumatic and spinning toys. KRIEGER, W. Nov. 20, 1959 [Jan. 12, 1959], No. 39483/59. Classes 132(2) and 132(3). An inflated or inflatable ball 1 is mounted centrally by links 7 in a hoop 4. As shown four links are used but the ball may be mounted on two diametrically opposite links in such manner that it can rotate relatively to the hoop. As shown each link carries an inclined plane 9 which causes the ball, after throwing, to descend slowly while rotating with the hoop horizontal. The device may be used as a top, spinning either on the ball with the hoop horizontal or on the hoop which then lies vertically. The links may be attached directly to the ball or to netting 2 tightly stretched thereover.
Patent GB-1216898-A (GB)
Title: Improvements in motor control systems
IPC: H02P7/292
Filed: 1968-08-21
Abstract: 1,216,898. Automatic control of speed. GENERAL ELECTRIC CO. Aug.21, 1968 [Sept. 7, 1967], No.39889/68. Heading G3R. [Also in Division H2]  A motor control system wherein a motor 10 is fed from an A.C. source by means of controlled rectifiers 90 is rendered more linear by varying the gain of an amplifier 48 (supplying input signals to control circuits 88) as an inverse junction of armature current. Input signals, derived from a command source (22), Fig.1 (not shown) and feedback from a tachmeter (34), are fed to a conductor 54 and thence to a high input-impedance voltage amplifier 74 via a resistance network including a field effect transistor 72. Signals proportional to armature current are fed from a resistor 50 to an invertor 94 and diodes 96, 98, which ensure negative-going signals at potentiometer 103, and these are fed to the gate of the f.e.t. 72 varying its drain-to-source resistance and hence the gain of the amplifier 48 in a manner which  compensates for the low current output of recti-  fiers 90 at small firing angles. A capacitor 102 smooths the signals to the f.e.t. 72 at low motor speeds. Instead of transistor 72 a light sensitive or magnetic flux sensitive resistor may be used  in the place of resistor 84 (in the feedback loop of amplifier 74) and its resistance varied by light or magnetic flux generated as a function of armature current.
Patent GB-1439524-A (GB)
Title: Exhaust gas silencer
IPC: F01N1/02
Filed: 1973-08-23
Abstract: 1439524 IC engine exhaust gas silencers R A LISTER & CO Ltd 25 April 1974 [23 Aug 1973] 39900/73 Heading F1B An exhaust gas silencer comprises a casing 10 with inlet and outlet passages, baffles 11, 12, 13 being inter-connected so that their inner portions 11b, 12b, 13b form a central tube which defines a chamber 14 and outer portions 11a, 12a, 13a defining with the inner surfaces of the casing wall outer chambers 15, 16, 17, the chambers being serially connected to define a tortuous path between the central chamber 14, which forms one of the passages, and the most downstream outer chamber 17 to which the other passage (formed by openings 21) is connected, the line along which each outer portion 11a, 12a, 13a meets the casing wall being circumferentially spaced from a radius from the axis of the central chamber through a juncture of inner and outer portions. Gas entering central chamber 14 from the right in Fig. 1 passes through openings 18, 19 and 20 which are of progressively smaller area and leaves the silencer via openings 21. The left end of the chambers 14-17 are closed by an end-plate (not shown) as is the right end of chambers 15-17. In Fig.2 (not shown) a plug (22) defines the end of the inlet passage and openings (23) allow gases to pass from chamber 17 to leave the silencer by an opening in the left hand end-plate. The central chamber may be of circular or non-circular cross-section, Fig.3 (not shown). The baffle plates, which need not be three in number, are secured together as a sub-assembly with the outer portions of the baffle plates extending outwardly to an extent requiring their deformation to fit the sub-assembly into the casing to facilitate welding. The silencer may be directly attached to an exhaust manifold as in Fig.4 (not shown).
Patent GB-897471-A (GB)
Title: Improvements in dry type capacitors
IPC: H01B3/44
Filed: 1960-11-21
Abstract: In a method of producing dry capacitors a capacitor roll of alternate aluminium or tin metal foil electrodes and interleaved dielectric layers (of e.g. Kraft paper) is impregnated under vacuum with a mixture of a monovinyl aryl compound monomer or polymer and at least one polyvinyl aryl compound monomer, e.g. a mixture of vinyl toluene, poly alpha methyl styrene and divinyl benzene.  The mixture also contains a polymerization catalyst, which is an organic peroxide or hydroperoxide or mixtures thereof, e.g. tertiary butyl hydroperoxide. After impregnation the roll is subjected to a shock curing process in which the roll is subjected to a temperature of between 120 DEG  and 185 DEG C. for a time between 5 and 120 minutes whilst immersed in air or oil, e.g. castor oil. Other impregnants and catalysts are mentioned.
Patent GB-1446783-A (GB)
Title: Crosslinked polymers
IPC: C08F292/00
Filed: 1973-08-23
Abstract: 1446783 Clarifying beverages GAF CORP 23 Aug 1973 [3 Oct 1972] 40075/73 Heading C6E [Also in Division C3] An insoluble, cross-linked, polymeric coating having a degree of shape stability is formed on an inert carrier by blending in situ at least one monomer capable of addition polymerization through an unsaturated double bond, a comonomer which contains more than one polymerizable unsaturated bond and an inert carrier and copolymerizing the monomers forming an insoluble cross-linked coating on the inert carrier, the inert carrier being selected from zeolites, alkaline earth metal oxides, alkaline earth metal hydroxides, silicon rubber, silica gels, glasses, ion-exchange resins, diatomaceons earth, and mixtures of two or more thereof, and the monomer or monomers capable of addition polymerization through an unsaturated bond being selected from substituted or unsubstituted amides of unsaturated carboxylic acids, substituted and unsubstituted esters of unsaturated carboxylic acids, vinyl ethers, N-vinyl lactams, vinyl esters, vinyl monomers containing basic nitrogen groups therein and copolymerizable mixtures of two or more thereof. 'Insoluble' means insoluble in water, strong mineral acids, caustic alkaline solutions and a range of organic solvents including hydrocarbons, chlorinated hydrocarbons, ethers, ketones and esters. In the Examples N- vinyl-2-pyrrolidone, divinyl benzine, ethylidenebis-vinyl pyrrolidone, dimethylaminoethyl methacrylate, 4-vinyl pyridine and allyl methacrylate are copolymerized on to diatomaceous earth, glass helices and silicon rubber beads in the presence of azo-bis-isobutyronitrile, water, t-butyl-peroxy pivalate and benzoyl peroxide. The products may be used as selective absorbents e.g. in the removal of impurities in beers and wines.
Patent GB-1083716-A (GB)
Title: Sheet roll holder
IPC: B65H23/04
Filed: 1964-10-02
Abstract: 1,083,716. Supporting paper rolls. ITEK CORPORATION. Oct. 2, 1964 [Oct. 4, 1963], No.40261/64. Heading G2A. A roll of light-sensitive paper such as is used in offset platemaking cameras is carried by a spool comprising a core 14 and end flanges 15, 15a. It is mounted in a light-tight housing 11 which can pivot open to allow access. The spool is mounted between two upright plates 16, 16a, from each of which project a pair of small rollers 28c, 28d, and 28a, 28b. Each pair subtends an angle of less than 180 at the spool axis, so that the spool is simply rolled into position, and locates itself correctly. The plates 16, 16a are attached respectively to brackets 17, 17a which can slide on a base-plate 19. The distance apart of the brackets is adjusted according to the spool width, and then clamped by screws 20, 20a. The rollers 28a - 28d may be replaced by continuous rods Fig. 6 (not shown) or arcuate supporting guides Fig. 5 (not shown). The plates 16, 16a carry locking members 33, 33a, which engage with the respective flanges 15, 15a, to prevent displacement of the spool laterally to its axis. The locking members are biased into the positions shown by springs 36, 36a, and can be pushed against this spring-loading, in the direction of arrow A, when the spool is being loaded into or unloaded out of the housing.
Patent GB-1015582-A (GB)
Title: Improvements in or relating to sealed magnetic reed contact devices
IPC: H01H51/28
Filed: 1962-10-25
Abstract: 1,015,582. Electromagnetic relays. WESTERN ELECTRIC CO. Inc. Oct. 25, 1962 [Nov. 2, 1961], No. 40363/62. Heading H2B. In a sealed magnetic contact device having mercury-wetted contacts, the mercury present is only that retained on the fixed and movable contacts. In manufacture the envelope of the device is connected to a reservoir 21 by a hollow terminal 17. Slugs of copper and/or tin are introduced into the reservoir followed by an excess of mercury. The assembly is then evacuated and filled with hydrogen prior to closing tube 22 by welding. The assembly is next held vertically with the contacts at the bottom, heated to 320 C. and vibrated longitudinally to wet the contacts. Finally, excess mercury is expelled from the envelope of the device by centrifuging and the terminal 17 is sealed.
Patent GB-1439994-A (GB)
Title: Preparation of 4-chloro-naphthalic acid salts derivatives and anhydride thereof
IPC: C07D311/92
Filed: 1973-08-30
Abstract: 1439994 Preparation of 4-chloronaphthalic acid, its anhydride, salts and derivatives HOECHST AG 30 Aug 1973 [30 Aug 1972] 40793/73 Heading C2C The invention comprises a process for the preparation of 4-chloronaphthalic acid, its anhydride, salts and derivatives which comprises chlorinating naphthalic acid or an anhydride, salt or derivative thereof in a solution containing alkali metal, hydroxide or carbonate and having a pH of 6.8-9.0 and then, if necessary, converting the obtained 4-chloroproduct to the required acid, salt, anhydride or derivative by a method known per se. The chlorination may be carried out using Cl 2  or hypochlorite and the exemplified product is 4-chloronaphthalic anhydride.
Patent GB-1272805-A (GB)
Title: Improvements in fuel injection systems for internal combustion engines
IPC: F02D41/32
Filed: 1969-08-15
Abstract: 1,272,805. Fuel injection systems. ROBERT BOSCH G.m.b.H. Aug.15, 1969 [Aug. 16, 1968], No. 40812/69. Heading G1N. [Also in Division F1] In a fuel injection system for a multi-cylinder I.C. engine having one injection valve for each cylinder, each injection valve being arranged to inject fuel into a respective portion of the intake manifold, all the injection valves are opened simultaneously and twice per working cycle. A single-lobed cam 37 on the distributor shaft 38 closes switches 40, 41 alternately whereby respective capacitors 44, 45 supply triggering pulses to a monostable multivibrator 20 to energize all the solenoid injection valves 11 simultaneously once every 360 degrees of crankshaft rotation. The period of opening of the injection valves is controlled in accordance with the depression in the intake manifold 30 by means of a movable core 28 of a coupling transformer which determines the relaxation time of the multivibrator. The period of opening can also be influenced by other engine variables acting upon the potential of the tapping P of a voltage divider 33, 34. The two switches 40, 41 and single-lobe cam 37 may be replaced by a single switch and a double-lobe cam. A further alternative is to use pulses from the primary of the ignition coil and, in the case of a four cylinder engine, halve their recurrence frequency by an electronic device.
Patent GB-1286799-A (GB)
Title: Novel cyclotriphosphazotrienes, method of producing same and application thereof
Inventor: CHERNOV VLADIMIR ALEXANDROVICH
IPC: C07F9/6593
Filed: 1970-08-26
Abstract: 1286799 Cyclotriphosphazotrienes VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY KHIMIKOFARMATSEVTICHESKY INSTITUT IMENI S ORDZHONIKIDZE 26 Aug 1970 40942/70 Heading C2P Novel ethylenimino - morpholino - substituted 2,2,4,4,6,6 - (chloro)cyclotriphosphazotrienes of the formula wherein n is 3, 4 or 5, are obtained by reacting ethyleneimine with 2,2,4,4, 6.pentachloro -6-morpholino-cyclotriphosphazotriene in an organic solvent, the ethyleneimine being present in an amount sufficient (1) to produce the desired product and to bind the HCl produced or (11) to produce the desired product when an additional HCl acceptor, e.g. triethylamine, is present. Preferred reaction temperatures are from 10‹ to 40‹ C. and specified organic solvents for use in the reaction are ethyl ether, benzene, chloroform and methylene chloride. When n is 3 the product is obtained in isomeric cis and trans forms which are formed simultaneously. In an example for the production of the isomers some 2,2,6-trichloro product in which n is 2 is also recovered. The products have cancerolytic activity and may be mixed with a pharmaceutically acceptable carrier to form an antitumoric preparation, the preferred carriers being distilled water, polyvinyl pyrrolidone, and an isotonic solution of sodium chloride.
Patent GB-1151398-A (GB)
Title: Improvements in or relating to Claus Process
IPC: C01B17/04
Filed: 1967-09-07
Abstract: 1,151,398. Sulphur. PINTSCH BAMAG A.G. 7 Sept., 1967 [7 Sept., 1966], No. 41030/67. Heading C1A. Sulphur is produced by reacting H 2 S with O 2  by the Claus process using either (a) excess O 2  so that the final gas contains only SO 2 , or (b) a deficiency of O 2  so that the final gas contains H 2 S which is then oxidized catalytically with O 2  to SO 2 ; the resultant gases are then mixed with O 2  and passed to an adsorption agent where SO 3  is formed and adsorbed; the charged adsorption agent is regenerated by heating; and the desorbed gases are recycled to the initial H 2 S/O 2  reaction. The adsorption agent may be activated carbon, semi-coke, or peat coke, or silica gel containing iron sulphate. The H 2 S and O 2  may be passed to a combustion vessel where S is deposited and SO 2  also formed, and the gases passed to a first catalytic reactor where H 2 S and SO 2  react to give further S, then through first and second heat exchangers to condense out S. The gases return through the first exchanger and are passed to a second catalytic reactor, then cooled to separate further S, mixed with O 2  or air, passed through the H 2 S/O 2  catalyst (if used), and then through the adsorption agent, which may be regenerated in a rotary kiln. The desorbed gases (SO 2 , SO 3 , and S) may be recycled to the combustion vessel or to the first or second catalytic reactors.